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"Roodaka watched with amusement as Nidhiki tried to master his new body. He was stumbling about on the sand, trying to move like a Toa but a prisoner of the monstrous form her mutation spinner had given him."
— Narrator, Birth of a Dark Hunter

Shapeshifted Mask of Mutation.JPG
The Mask of Mutation (Shapeshifted)
Matoran prefix None
Associated colors None

Mutation is a power that changes the molecular structure of a target. It can give and take powers,[1][2] but not change their element[3][4] or destiny.[5] With the exception of Hordika Venom,[6][7][8] mutagens only cause physical change and also effect non-living objects.[9][10] Hordika Venom can only affect objects when closely tied to a living being, like Toa Tools, and the being is also mutated.[11][12] Mutations caused by Reconstitute at Random disks,[13] the Pit Mutagen,[14][15] and Hordika Venom[16][17] are random, but Roodaka, through her Rhotuka, and any user of a Mask of Mutation can control how their target is mutated.[18][19] Mutations from Energized Protodermis are based on destiny. Beings with a mutation power cannot mutate themselves.[20][21][22] Roodaka's Rhotuka, Mask of Mutation, and Energized Protodermis mutations are instant and permanent (unless undone),[23][24] but Hordika Venom and Pit Mutagen are not instant.[25] Reconstitute at Random is temporary. In some cases, mutations can also cause fusions of two or more beings.

Mutated Beings

Energized Protodermis

Hordika Venom

Pit Mutagen

Roodaka's Rhotuka



  • A mask made solely from a Reconstitute at Random disk would still not be able to control the mutation it causes.[26] It would work at a distance[27] and only on targets, not the user themselves.[28][29] It would also be considered an immoral mask power.[30]
  • The Pit Mutagen effects organics, but much more slowly.[31]
  • The Mask of Life can reverse mutations, but not cause them.[32][33][34]
  • Energized Protodermis cannot undo previous mutations.[35]


  1. "Official Greg Dialogue," page 319, post 12746. BZPower.
  2. "Official Greg Dialogue," page 331, post 13227. BZPower.
  3. "Official Greg Dialogue," page 321, post 12804. BZPower.
  4. "Chat with Greg Farshtey," page 325, post 9879467. LEGO Message Boards.
  5. "Official Greg Discussion," page 304, post 12150. BZPower.
  6. "Official Greg Discussion," page 79, post 3147. BZPower.
  7. "Official Greg Discussion," page 70, post 2789. BZPower.
  8. "Official Greg Discussion," page 80, post 3194. BZPower.
  9. "Mahri Nui." World, p. 89.
  10. "Official Greg Discussion," page 206, post 8203. BZPower.
  11. "Official Greg Discussion," page 60, post 2389. BZPower.
  12. "Official Greg Discussion," page 72, post 2860. BZPower.
  13. "Official Greg Discussion," page 28, post 1095. BZPower.
  14. "Official Greg Dialogue," page 161, post 6432. BZPower.
  15. "Chat with Greg Farshtey," page 328, post 9929347. LEGO Message Boards.
  16. "Official Greg Discussion," page 65, post 2594. BZPower.
  17. "Official Greg Discussion," page 63, post 2516. BZPower.
  18. "Official Greg Discussion," page 108, post 4288. BZPower.
  19. "Official Greg Dialogue," page 258, post 10316. BZPower.
  20. "Chat with Greg Farshtey," page 682, post 12447745. LEGO Message Boards.
  21. "Official Greg Discussion," page 106, post 4221. BZPower.
  22. "Official Greg Discussion," page 81, post 3230. BZPower.
  23. "Official Greg Discussion," page 77, post 3062. BZPower.
  24. "Official Greg Discussion," page 78, post 3115. BZPower.
  25. "Official Greg Discussion," page 65, post 2600. BZPower.
  26. "Official Greg Discussion," page 33, post 1295. BZPower.
  27. "Official Greg Discussion," page 76, post 3035. BZPower.
  28. "Official Greg Discussion," page 60, post 2369. BZPower.
  29. "Official Greg Discussion," page 293, post 11704. BZPower.
  30. "Official Greg Dialogue," page 98, post 3914. BZPower.
  31. "Official Greg Discussion," page 186, post 7413. BZPower.
  32. "Official Greg Dialogue," page 196, post 7825. BZPower.
  33. "Official Greg Dialogue," page 313, post 12484. BZPower.
  34. "Official Greg Dialogue," page 71, post 2812. BZPower.
  35. "Official Greg Discussion," page 84, post 3358. BZPower.